// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_WM_PUBLIC_ANIMATION_HOST_H_
#define UI_WM_PUBLIC_ANIMATION_HOST_H_

#include "base/compiler_specific.h"
#include "ui/aura/aura_export.h"

namespace gfx {
class Vector2d;
}

namespace aura {
class Window;
namespace client {

    // Interface for top level window host of animation. Communicates additional
    // bounds required for animation as well as animation completion for deferring
    // window closes on hide.
    class AURA_EXPORT AnimationHost {
    public:
        // Ensure the host window is at least this large so that transitions have
        // sufficient space.
        // The |top_left_delta| parameter contains the offset to be subtracted from
        // the window bounds for the top left corner.
        // The |bottom_right_delta| parameter contains the offset to be added to the
        // window bounds for the bottom right.
        virtual void SetHostTransitionOffsets(
            const gfx::Vector2d& top_left_delta,
            const gfx::Vector2d& bottom_right_delta)
            = 0;

        // Called after the window has faded out on a hide.
        virtual void OnWindowHidingAnimationCompleted() = 0;

    protected:
        virtual ~AnimationHost() { }
    };

    AURA_EXPORT void SetAnimationHost(Window* window,
        AnimationHost* animation_host);
    AURA_EXPORT AnimationHost* GetAnimationHost(Window* window);

} // namespace client
} // namespace aura

#endif // UI_WM_PUBLIC_ANIMATION_HOST_H_
